Why does my WOL enabled PC hosting a website wake on its own?

Christian Thompson August 20, 2012
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I have a PC that host website. I also use this PCas network storage and media servers.

I have Wake-on-LAN (WOL) enabled (without remote management) and I can get the PC to wake from standby (when it works) when someone accesses the websites or it’s ping’d. The problem I have is that since I have done Windows updates (120) the PC instantly wakes up when put to sleep. I do powercfg -lastwake and it is the network card. I can not get the PC to stay asleep and only wake when I request it or when websites are accessed.

If I enable management WOL the PC does not wake at all. Perfect, but then it also does not wake when someone is on the website or when I ping it.

Does anyone know what’s going on? Can I have it the way I want it without it waking itself? It seems there is something on the network side from the router that is waking the PC! I have used wireshark programme and I don’t know what I should be looking for that’s waking the pc!

Is there a way I can integrate magic packet onto my websites so when someone accesses the website that it wakes the pc? Or is there a way i can find out what’s waking the pc on the network and disable it?

FYI: I am running Server Enterprise 2008 (mainly for iis7 and ADDC)

Thank you for your help in advance.

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  1. venkatp16
    August 26, 2012 at 2:43 pm

    may any of the windows updates and WOL have incompatiability. did you try taking the system to old state and check if updates is cauing the issue.

    • Christian Thompson
      August 26, 2012 at 4:02 pm

      Hi, thanks for Your help.

      The problem is I do not know what update (if that's the cause) is causing it. When I installed and the updates they were done in bulk. I can not 100% confirm that this problem is related to windows updates

      • venkatp16
        August 26, 2012 at 4:29 pm

        i've understood that you are running IIS7. Could you please check something that got installed for this

        • Christian Thompson
          August 26, 2012 at 4:40 pm

          Sorry I don't understand. Yes I installed iis7, I don't believe this is the fault. I have blocked all incoming ports in the firewall and still I have the same problem and powercfg -last wake still says its the LAN card!

  2. Bruce Epper
    August 21, 2012 at 7:58 am

    You had the right idea with Wireshark. Just filter for the WOL protocol to find the source of the packets that are waking the server.

    • Christian Thompson
      August 22, 2012 at 9:36 pm

      Hi, thank you so much for getting back to me. I do appreciate your help. Just one thing I'm not sure of . . . . I don't know what protocols I should be looking out for to stop. Do you know what protocols the system is looking for to wake it?

      • Bruce Epper
        September 9, 2012 at 9:17 am

        In the protocol list, there is one labeled 'WOL'. That's all you need to look for.

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